People are generally aware of the most common causes of hallucinations, like schizophrenia and a really high fever. But lesser known are the more rare causes; here are six you probably haven't heard about.

Creutzfeldt-Jakob Disease Stories

People are generally aware of the most common causes of hallucinations, like schizophrenia and a really high fever. But lesser known are the more rare causes; here are six you probably haven't heard about.

Humans have been eating each other for a long, long time. Sometimes they do it out of desperation, and sometimes they suffered fatal consequences. Here are some tales of cannibalism throughout history.

The outbreak of mad cow disease in humans during the 1980s and 1990s caused many people to become carriers of the abnormal protein responsible for the disease. A new study finds that the amount of carriers is double what was previously believed.

A fast test to diagnose fatal brain conditions such as mad cow disease in cattle and Creutzfeldt-Jakob disease in humans could be on the horizon, according to a new study from National Institutes of Health scientists.